JPH1019129A - Cylinder head gasket - Google Patents

Cylinder head gasket

Info

Publication number
JPH1019129A
JPH1019129A JP8172604A JP17260496A JPH1019129A JP H1019129 A JPH1019129 A JP H1019129A JP 8172604 A JP8172604 A JP 8172604A JP 17260496 A JP17260496 A JP 17260496A JP H1019129 A JPH1019129 A JP H1019129A
Authority
JP
Japan
Prior art keywords
bead
cylinder
cylinder head
head gasket
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8172604A
Other languages
Japanese (ja)
Inventor
Yoshio Miyaou
芳男 宮應
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ishikawa Gasket Co Ltd
Original Assignee
Ishikawa Gasket Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ishikawa Gasket Co Ltd filed Critical Ishikawa Gasket Co Ltd
Priority to JP8172604A priority Critical patent/JPH1019129A/en
Priority to FR9707919A priority patent/FR2750736B1/en
Priority to KR1019970027466A priority patent/KR100232451B1/en
Priority to DE19727714A priority patent/DE19727714A1/en
Publication of JPH1019129A publication Critical patent/JPH1019129A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F02F11/002—Arrangements of sealings in combustion engines  involving cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J2015/085—Flat gaskets without fold over
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gasket Seals (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder head gasket uniforming sealing around cylinders of a multiple cylinder internal combustion engine with subsidiary chambers. SOLUTION: Beads 3-1, 3-2 surrounding subsidiary chamber arranged positions 5 and cylinder holes 2-1, 2-2 provided at a cylinder head gasket 1 for multiple cylinder internal combustion engine with subsidiary chambers are formed at every one of the cylinder holes 2-1, 2-2 formed in a metal sheet. In this case, it is so formed that the bead strength is stronger at parts (c) where the adjacent cylinder holes 2-1, 2-2 are brought close to each other and the bead strength is weak at bead parts (a) where the beads 3-1, 3-2 surrounding the outside of the subsidiary chamber arranged positions 5 are separated from the cylinder holes 2-1, 2-2 and at bead parts (b) brought close to the longitudinal ends 7.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明が属する技術分野】本発明は、シリンダヘッドガ
スケットに関し、更に詳細には、副燃焼室を有する多気
筒型内燃機関のシリンダヘッドガスケットに関するもの
である。The present invention relates to a cylinder head gasket, and more particularly, to a cylinder head gasket of a multi-cylinder internal combustion engine having a sub-combustion chamber.

【０００２】[0002]

【従来の技術】ディーゼルエンジンなどでは、燃料の着
火特性の改善などの目的で副燃焼室をシリンダヘッドに
設けることは周知である。この副燃焼室を有する内燃機
関のシリンダヘッドガスケットは、シリンダヘッドのシ
リンダボディ側の開口部周囲から燃焼ガスが漏出しない
ように、シリンダ穴をシールするビード（以下主ビード
という）によって、前記開口部の外側を囲うようにして
いることは、例えば実開平３−７７０５３号公報などに
よって周知である。2. Description of the Related Art In a diesel engine or the like, it is well known that a sub-combustion chamber is provided in a cylinder head for the purpose of improving the ignition characteristics of fuel. The cylinder head gasket of the internal combustion engine having the sub-combustion chamber is provided with a bead (hereinafter referred to as a main bead) that seals a cylinder hole so that combustion gas does not leak from around the cylinder body-side opening of the cylinder head. Is known, for example, from Japanese Utility Model Laid-Open No. 3-77053.

【０００３】ところで、多気筒内燃機関の高出力・軽量
化などの目的でアルミニウム合金製シリンダヘッドが近
年使用されるようになったが、鋳鉄製シリンダブロック
との熱膨張差により、機関作動中にシリンダヘッドの中
央部が凸状に反るように変形する傾向がある。そのため
機関作動中、シリンダヘッドガスケットの長手方向両端
部に大きな力が加わり、ビードが損傷し、この部分のシ
ール性が損なわれるという問題があった。In recent years, cylinder heads made of aluminum alloy have been used in recent years for the purpose of reducing the output and weight of a multi-cylinder internal combustion engine. The center of the cylinder head tends to be deformed so as to be convex. Therefore, during operation of the engine, a large force is applied to both longitudinal end portions of the cylinder head gasket, which causes a problem that the bead is damaged and the sealing performance of this portion is impaired.

【０００４】そこで、従来から前記変形を補償するスペ
ーサを用いるなどの対策が採られている。その他の対策
として実公平５−１７２８号公報に開示された手段は、
多気筒内燃機関のシリンダヘッドガスケットの主ビード
について、長手方向端部に接近するビード部分の幅及び
曲げ半径を他のビード部分のそれより大きく形成するこ
とにより、耐久性を持たせるようにするものである。Therefore, measures such as using a spacer for compensating the deformation have been taken. As other measures, the means disclosed in Japanese Utility Model Publication No. 5-1728 is
A main bead of a cylinder head gasket of a multi-cylinder internal combustion engine which has durability by forming a width and a bending radius of a bead portion approaching a longitudinal end portion larger than those of other bead portions. It is.

【０００５】[0005]

【発明が解決しようとする課題】ところで周知のよう
に、シリンダヘッドガスケットは、シリンダ穴の周囲に
複数本のボルトを配置して締め付けるため、シリンダ穴
用ビードの各部分の締め付け力は一定せず、機関の高性
能化に伴い、ビード各部のシール性能をより均一にする
ことが求められるようになっている。As is well known, a cylinder head gasket has a plurality of bolts arranged around a cylinder hole and tightened. Therefore, the tightening force of each part of a cylinder hole bead is not constant. As the performance of engines increases, it is required that the sealing performance of each part of the bead be made more uniform.

【０００６】特に副燃焼室を有する多気筒内燃機関の場
合、前記実開平３−７７０５３号公報にも示されている
ように、副燃焼室の外側を囲むビードは、シリンダ穴か
ら最も離れる部分は、一般に隣合うボルト穴の中心を結
ぶ線より外側にはみ出す部分が生じるなど、主ビードの
各部分のシール性能を不均一にする要素が多く、改善が
求められていた。In particular, in the case of a multi-cylinder internal combustion engine having a sub-combustion chamber, a bead surrounding the outside of the sub-combustion chamber has a portion farthest from the cylinder hole as shown in Japanese Utility Model Laid-Open No. 3-77053. In general, there are many factors that make the sealing performance of each part of the main bead non-uniform, such as a part that protrudes outside a line connecting the centers of the adjacent bolt holes, and thus improvement has been demanded.

【０００７】本発明は、以上説明した問題に着目してな
されたものであり、副燃焼室を有する多気筒内燃機関の
シリンダの周囲のシールを均一化したシリンダヘッドガ
スケットを提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the problems described above, and has as its object to provide a cylinder head gasket in which a seal around a cylinder of a multi-cylinder internal combustion engine having a sub-combustion chamber is made uniform. I have.

【０００８】[0008]

【課題を解決するための手段】以上の目的を達成するた
めの本発明のシリンダヘッドガスケットの構成は、副燃
焼室を有する多気筒内燃機関用のシリンダヘッドガスケ
ットであって、シリンダ穴及び副燃焼室配置位置の周囲
を取り巻くビードを、金属薄板に形成したシリンダ穴ご
とに形成し、前記ビードは、隣合うシリンダ穴が接近す
る部分のビード強さをより強く形成し、また副燃焼室の
外側を囲むビードがシリンダ穴から離れるビード部分及
び長手方向端部に近接するビード部分のビード強さを弱
く形成したものである。A cylinder head gasket of the present invention for achieving the above object is a cylinder head gasket for a multi-cylinder internal combustion engine having a sub-combustion chamber. A bead surrounding the chamber arrangement position is formed for each cylinder hole formed in a thin metal plate, and the bead forms a stronger bead at a portion where an adjacent cylinder hole approaches, and a bead outside the sub-combustion chamber. Is formed to have a low bead strength at a bead portion separated from the cylinder bore and at a bead portion near the longitudinal end.

【０００９】前記ビードの断面形状には特に限定はな
く、山形、波形、台形、その他従来から使用されるもの
を適宜選択することができるが、通常は山形である。前
記ビード強さを強く形成する手段は、従来から知られて
いる手段、例えば、ビード幅を狭く形成したり、ビード
高さを高く形成したり、ビードの曲率を小さくするなど
の手段を用いることができる。The cross-sectional shape of the bead is not particularly limited, and a bead, a corrugated shape, a trapezoid, and other conventionally used shapes can be appropriately selected. Means for forming the bead strength is conventionally known means, for example, using a means such as forming a narrow bead width, forming a high bead height, or reducing the curvature of the bead. Can be.

【００１０】また前記ビード強さを弱く形成する手段
は、前記とは逆に、ビード幅を広く形成したり、ビード
高さを低く形成したり、ビードの曲率を大きくするなど
の手段を用いることができる。本発明のシリンダヘッド
ガスケットは、前記以外の構成については、本発明の本
質を損なわない限り、従来から金属ガスケットに適用さ
れる各種の手段を適用することができる。Conversely, the means for forming the bead strength to be weak may use means for forming a wide bead width, forming a low bead height, or increasing a bead curvature. Can be. As for the cylinder head gasket of the present invention, various means conventionally applied to a metal gasket can be applied to the configuration other than the above unless the essence of the present invention is impaired.

【００１１】[0011]

【発明の実施の形態】以下図面を対照し、一実施の形態
により本発明を具体的に説明する。図１に示すシリンダ
ヘッドガスケット（以下単にガスケットという）１は、
副燃焼室を設けた４気筒内燃機関（図示せず）用の金属
積層形ガスケットであり、内側のシリンダ穴２1 をシー
ルするビード３1 、外側のシリンダ穴２2 をシールする
ビード３2 （以下総称する際はサフィックスを省略して
記載する）及びその周囲にボルト穴４を設けている。な
お、ガスケット１には前記の外、水穴、オイル穴、プッ
シュロッド穴など必要とする開口を設けているが、これ
らの図示を省略した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment, with reference to the drawings. The cylinder head gasket (hereinafter simply referred to as gasket) 1 shown in FIG.
A metal laminate type gasket for swirl chamber provided four-cylinder internal combustion engine (not shown), the bead 3 1, the bead 3 2 to seal the outside of the cylinder bore 2 2 to seal the inside of the cylinder bore 2 1 ( Hereinafter, the suffix will be omitted when collectively referred to) and a bolt hole 4 is provided around the suffix. The gasket 1 is provided with necessary openings such as a water hole, an oil hole, a push rod hole, etc., but these are not shown.

【００１２】ボルト穴４は、各シリンダ穴２の周囲に４
個づつ配置されるように全体で１０個設けており、副燃
焼室（図示せず）の開口位置５は、２点鎖線で示した位
置に開口している。したがって、ビード３が副燃焼室の
外側に配置されたビード部分ａは、ボルト穴４の中心を
結ぶ線６より外側に配置されている。また、ガスケット
１の長手方向端縁７に近い部分に配置されたビード部分
ｂ（２か所）は、シリンダヘッド（図示せず）の熱膨張
・収縮の影響を最も受ける部分であり、またシリンダ穴
２の最も接近する部分（３か所）のビード部分ｃは、シ
リンダヘッドの剛性が低下し変形し易くなり、最も面圧
が発生しにくい部分である。なお図１に示す符号８はビ
ード板である。A bolt hole 4 is provided around each cylinder hole 2.
Ten pieces are provided in total so as to be arranged one by one, and the opening position 5 of the sub-combustion chamber (not shown) opens at the position shown by the two-dot chain line. Therefore, the bead portion a where the bead 3 is arranged outside the sub-combustion chamber is arranged outside the line 6 connecting the centers of the bolt holes 4. In addition, bead portions b (two places) disposed near the longitudinal edge 7 of the gasket 1 are portions most affected by thermal expansion and contraction of a cylinder head (not shown). The bead portion c at the closest portion (three places) of the hole 2 is a portion where the rigidity of the cylinder head is reduced and the cylinder head is easily deformed, and the surface pressure is hardly generated. Reference numeral 8 shown in FIG. 1 is a bead plate.

【００１３】ビード３1 のビード強さは、前記線６の外
側を通る前記ビード部分ａのビード幅を広く、前記ビー
ド部分ｃのビード幅を狭く、シリンダ穴２1 の反対側の
ビード部分ｄをその中間のビード幅に形成した。またビ
ード３2 のビード強さは、前記線６の外側を通る前記ビ
ード部分ａ及び長手方向端縁７に最も近いビード部分ｂ
のビード幅を広く、シリンダ穴２1 に最も接近するビー
ド部分ｃのビード幅を狭く、シリンダ穴２1 に対し副燃
焼室と反対側ビード部分ｄをこれらの中間のビード幅に
形成した。[0013] bead strength of the bead 3 1 wide bead width of the bead portion a passing outside of the line 6, a narrow bead width of the bead portion c, the bead portion of the cylinder bore 2 1 opposite d Was formed at the intermediate bead width. The bead strength of the bead 3 2, the bead portion a and the closest bead portion b in the longitudinal edge 7 passes outside the line 6
Wide bead width of a narrow bead width of the bead portion c that closest to the cylinder bore 2 1, the opposite bead portion d and the sub combustion chamber to cylinder bore 2 1 was formed on these intermediate bead width.

【００１４】以上のようにボルト穴４の中心を結ぶ線６
の外にはみ出す位置に配置されたため、ビード３の圧縮
力が十分得にくいビード部分ａと、過大な荷重が加わる
シリンダヘッドガスケットの長手方向両端部のビード部
分ｂとのビード強さをより弱く形成し、２本のビード３
が互いに接近したために各ビード３に十分な面圧が発生
しないビード部分ｃのビード強度を高くすることによ
り、全体としてビード３全周にわたりバランスのとれた
シール面圧を発生させることが可能となる。The line 6 connecting the centers of the bolt holes 4 as described above
Since the bead 3 is disposed at a position protruding outside the bead 3, the bead strength of the bead portion a where it is difficult to sufficiently obtain the compressive force of the bead 3 and the bead portions b at both ends in the longitudinal direction of the cylinder head gasket where an excessive load is applied are formed to be weaker. And two beads 3
By increasing the bead strength of the bead portion c in which sufficient contact pressure is not generated on each bead 3 due to the close proximity of each other, it is possible to generate a balanced seal contact pressure over the entire circumference of the bead 3 as a whole. .

【００１５】[0015]

【発明の効果】以上説明したように本発明のシリンダヘ
ッドガスケットは、シリンダ穴及び副燃焼室の周囲を囲
み、シリンダ穴ごとに独立したビードの各部分に発生す
る面圧分布に応じてビード強さを変更するようにしたの
で、ビード全周にわたりより均一なシール面圧を発生さ
せることができ、シリンダ穴及び副燃焼室の安定したシ
ール性能を確保することができた。As described above, the cylinder head gasket of the present invention surrounds the periphery of the cylinder hole and the sub-combustion chamber, and has a bead strength in accordance with the surface pressure distribution generated in each part of the bead independent for each cylinder hole. As a result, a more uniform sealing surface pressure can be generated over the entire circumference of the bead, and a stable sealing performance of the cylinder hole and the sub-combustion chamber can be secured.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明のシリンダヘッドガスケットのシリンダ
穴及び副燃焼室をシールするビードの一実施の形態を示
す平面図である。FIG. 1 is a plan view showing an embodiment of a bead for sealing a cylinder hole and a sub-combustion chamber of a cylinder head gasket of the present invention.

【符号の説明】[Explanation of symbols]

１ ガスケット（シリンダヘッドガスケット） ２ シリンダ穴 ２1 シリンダ穴 ２2 シリンダ穴 ３ ビード ３1 ビード ３2 ビード ４ ボルト穴 ５ 副燃焼室配置
位置 ６ 線 ７ 長手方向端縁 ８ ビード板 ａ ビード部分 ｂ ビード部分 ｃ ビード部分 ｄ ビード部分DESCRIPTION OF SYMBOLS 1 Gasket (cylinder head gasket) 2 Cylinder hole 2 1 Cylinder hole 2 2 Cylinder hole 3 Bead 3 1 Bead 3 2 Bead 4 Bolt hole 5 Secondary combustion chamber arrangement position 6 Line 7 Longitudinal edge 8 Bead plate a Bead portion b Bead Part c Bead part d Bead part

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】副燃焼室を有する多気筒内燃機関用のシリ
ンダヘッドガスケットであって、シリンダ穴及び副燃焼
室配置位置の周囲を取り巻くビードを、金属薄板に形成
したシリンダ穴ごとに形成し、前記ビードは、隣合うシ
リンダ穴が接近する部分のビード強さをより強く形成
し、また副燃焼室の外側を囲むビードがシリンダ穴から
離れるビード部分及び長手方向端部に近接するビード部
分のビード強さを弱く形成したシリンダヘッドガスケッ
ト。1. A cylinder head gasket for a multi-cylinder internal combustion engine having a sub-combustion chamber, wherein a bead surrounding a cylinder hole and a sub-combustion chamber arrangement position is formed for each cylinder hole formed in a thin metal plate. The bead forms a stronger bead at a portion where an adjacent cylinder hole approaches, and a bead at a portion where a bead surrounding the outside of the sub-combustion chamber is separated from the cylinder hole and at a portion near a longitudinal end. Cylinder head gasket with low strength.
JP8172604A 1996-07-02 1996-07-02 Cylinder head gasket Pending JPH1019129A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8172604A JPH1019129A (en) 1996-07-02 1996-07-02 Cylinder head gasket
FR9707919A FR2750736B1 (en) 1996-07-02 1997-06-25 CYLINDER HEAD GASKET FOR AUXILIARY COMBUSTION CHAMBERS
KR1019970027466A KR100232451B1 (en) 1996-07-02 1997-06-26 Cylinder head gasket
DE19727714A DE19727714A1 (en) 1996-07-02 1997-06-30 Cylinder head seal for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8172604A JPH1019129A (en) 1996-07-02 1996-07-02 Cylinder head gasket

Publications (1)

Publication Number Publication Date
JPH1019129A true JPH1019129A (en) 1998-01-23

Family

ID=15944951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8172604A Pending JPH1019129A (en) 1996-07-02 1996-07-02 Cylinder head gasket

Country Status (4)

Country Link
JP (1) JPH1019129A (en)
KR (1) KR100232451B1 (en)
DE (1) DE19727714A1 (en)
FR (1) FR2750736B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4252049B2 (en) * 2005-06-03 2009-04-08 石川ガスケット株式会社 Cylinder head gasket

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2073335B (en) * 1981-02-17 1984-06-27 Lechler Elring Dichtungswerke Internal combustion engine gasket
JPS62155375A (en) * 1985-12-27 1987-07-10 Nippon Metal Gasket Kk Metallic gasket
JPH0521653Y2 (en) * 1988-07-09 1993-06-03
JP2518002Y2 (en) * 1989-11-29 1996-11-20 石川ガスケット 株式会社 Gasket for cylinder head with pre-combustion chamber
US5344165A (en) * 1991-05-13 1994-09-06 Ishikawa Gasket Co., Ltd. Metal gasket having fluid hole sealing device with different spring constant

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FR2750736A1 (en) 1998-01-09
DE19727714A1 (en) 1998-01-08

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